You can now add the vehicles you own to your profile as little icons that appear in your profile and alongside your posts.
This is a bit of an experiment. Take a look under the "REWARDS" menu across the top of the screen for the vehicles "ADD/MODIFY" option.
Let me know how you get on.

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A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.

Hi there, just had the clutch done in my girlfriends jimny, picked it up yesterday, went to select 4 wheel drive and there is no green light illuminating. I can here the revs drop ever so slightly so I can tell something is trying to do something. I got the jimny on a ramp about an hour ago, and one of the vacuum lines has broken typically (was working prior to clutch work.) I understand that if a vacuum line is broken you have a flashing green light, when in my case there is none.

what repair kits are available for this kind of break? and why do I have no green 4x4 light?

Im looking to fit a 2" lift kit as well at some point so can fit an aftermarket kit if there are ones available.

Hi, no need to apologise for the question on the vacuum hubs. Unfortunately I am no expert on them but will just start the conversation with my own knowledge limited opinion.

They do appear an eventual point of failure on the Jimny, as such many off road enthusiasts just remove them and replace with manual hubs. I fully understand this and would consider the same if your goal is an off road machine. I only mention this as you indicate you intend to lift in the future.

The drop in rpm is most likely caused by the massive leak in your vacuum system, so before you do anymore fix the broken pipe you have found. The metal pipes that distribute the vacuum are prone to rust and will cost about £170 for a new set. You can replace them totally with plastic tube, I plan to replace mine with a new set fabricated from brake pipe. I simply feel like the challenge.

So start by fixing that big break in the pipe as best you can if you wish to keep them, or have a search for AVM hubs.

Thanks for the input guys it’s much appreciated, I want to retain the tranfer stock option as this is my girlfriends car and I know she would rather be able to transfer in car rather than out. What plastic pipe would I use? I was wondering if there were aftermarket kits already available for the vacuum systems on the jimnys. Or is this simply something I have to make and fit.

More importantly I’m worried about the fact there is no light illuminating on the dash for the 4 wheel system, everywhere I read people with vacuum leaks have a flashing green light where in my case there is nothing when I select 4x4?

As far as I am aware no kits exist for this pipework other than factory replacement (£170 ish), hence why I intend to make my own out of brakepipe. Some have just replaced with flexible hose and plastic T connectors and it works, I did see a link to some pipe on another topic, I will try and find this.

Re the lack of flashing light.. I am not sure of the order of events when you select 4WD, but from what I have seen written so far the transfer box appears sends a signal to the controller when it has engaged in 4WD. At this point it is possible the vacuum system starts its cycle, or maybe they both start together, its not clear. The drop in rpm indicates that it is attempting to move the hubs. Whats not clear is what happens to the light if the transfer box signals are incorrect / in combination with a large vacuum leak. Well not clear to me at this time!!
I would just bridge the known leak with a sort section of flexible pipe and see if thing improve, hopefully they will.

It may be possible you have a damaged connector or electrical connection on the transfer box, more so as things may have been moved during the clutch work. Worth checking these connections but not much more at this stage.

pop into a local hydraulic hose specialist or engineering supplies (In Carlisle we have System Hydraulics, Hayley, Tohmas Grahams, etc.) Most cities will have loads of places that sell this tubing and all the fittings for it. Ebay or Amazon will also sell it, but a local supplier will be able to show you the bits fit before parting with your cash! This sort of tubing is normally used for air operated wotzits in production lines (airline basically). It can handle some pretty impressive pressures so ideal for a basic vac line.

From the hubs i have found that the 6mm (outside diameter) is a snug fit onto the hub connectors and is pretty similar to the size suzuki used in the first place.

I think you would need about 5mtrs of pipe and a couple of 'T' splitters. Should be less than £15 from above suppliers.